550 SC-001 (COL0-MC2-F23) Unfortunately

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  i cant send email from my exchange 2003 to Hotmail although i am not listed in other sites and i can send to yahoo and gmail. when i send email to Hotmail i receive this message.

  #5.5.0 smtp;550 SC-001 (COL0-MC2-F23) Unfortunately, messages from 0.0.0.0 weren't sent. Please contact your Internet service provider since part of their network is on our block list. You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors.>

  please i need you help send me to my email ahmadfouad82@hotmail.com

  Sunday, June 3, 2012 7:27 AM